Disconnect all other external USB storage drives to prevent accidental data loss.
: If using the Phison Restore tool, click the "Restore" button rather than "Format." This triggers the controller to reset its internal flag, which is the most common fix for the "new" V3700 series errors. Troubleshooting "Device Not Found"
In the settings window, navigate:
There is no official "Silicon Power" formatter. Instead, you must use a generic Phison utility pre-configured for this controller. Based on successful repairs from 2021–2025, the recommended "new" formatter suite is: formatter silicon power v3700 ps2251162 new
When a USB drive is pulled out mid-write, suffers a power surge, or reaches its read/write limit, the controller's firmware can become corrupted. To protect the underlying hardware, the controller locks the drive into a permanent or "Read-Only" state, or drops offline entirely.
What and Flash ID did ChipGenius detect?
Extract the .zip file using extraction tools like 7-Zip or WinRAR. Step 3: Run the Format Procedure Close any open File Explorer windows to prevent conflicts. Disconnect all other external USB storage drives to
At the same price point ($12-18 USD for 128GB):
Download this first to confirm the Controller Part-Number and Flash ID .
Windows should now recognize the drive as a clean, healthy storage device with its original capacity restored. Troubleshooting Common Errors Error: "Device not found" or "No Drive Detected" Instead, you must use a generic Phison utility
Knowing this, or if you can confirm the specific Silicon Power model number, I can suggest more specialized MPTool versions.
Launch the tool. It will scan your system and output a text report. Look for the following fields in the report: Phison
💡 Always check your VID (081D) and PID to ensure you are using the correct version of the tool for Silicon Power hardware.
If your drive is showing as "Unknown Device" or "Disk is Write Protected," try these utilities in order: